package com.atstudying.mall.mallcart.vo;

import lombok.Data;

import java.math.BigDecimal;
import java.util.List;

/**
 * @author Mr.zhneg
 * @create 2020-11-15-15:04
 * 整个购物车
 * 需要计算属性，必须要重写它的get方法，保证每次获取属性都会进行计算
 */
@Data
public class Cart {

    List<CartItem> items;
    private Integer countNum;//商品数量
    private Integer countType;//商品类型数量
    private BigDecimal totalAmount;//商品总价
    private BigDecimal reduce=new BigDecimal(0);//减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count=0;
        if (items!=null&&items.size()>0){
            for (CartItem cart:items
                 ) {
                count+=cart.getCount();
            }
        }
        return count;
    }

    public Integer getCountType() {
        int count=0;
        if (items!=null&&items.size()>0){
            for (CartItem cart:items
                    ) {
                count+=1;
            }
        }
        return count;
    }


    public BigDecimal getTotalAmount() {

        BigDecimal amount=new BigDecimal("0");
        //计算购物项总价
        if (items!=null&&items.size()>0){
            for (CartItem cart:items
                    ) {
                if (cart.getCheck()){
                    BigDecimal totalPrice=cart.getTotalPrice();
                    amount=amount.add(totalPrice);
                }

            }
        }
        //2：减去优惠价
        BigDecimal subtract = amount.subtract(getReduce());

        return subtract;
    }



    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
